/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2014 Rexx Language Association. All rights reserved.    */
/*                                                                            */
/* This program and the accompanying materials are made available under       */
/* the terms of the Common Public License v1.0 which accompanies this         */
/* distribution. A copy is also available at the following address:           */
/* https://www.oorexx.org/license.html                                        */
/*                                                                            */
/* Redistribution and use in source and binary forms, with or                 */
/* without modification, are permitted provided that the following            */
/* conditions are met:                                                        */
/*                                                                            */
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/* notice, this list of conditions and the following disclaimer.              */
/* Redistributions in binary form must reproduce the above copyright          */
/* notice, this list of conditions and the following disclaimer in            */
/* the documentation and/or other materials provided with the distribution.   */
/*                                                                            */
/* Neither the name of Rexx Language Association nor the names                */
/* of its contributors may be used to endorse or promote products             */
/* derived from this software without specific prior written permission.      */
/*                                                                            */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS        */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT          */
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/*                                                                            */
/*----------------------------------------------------------------------------*/
/******************************************************************************/
/* REXX Unix Support                                                          */
/*                                                                            */
/* Unix memory management routines                                            */
/*                                                                            */
/******************************************************************************/


#include <stdlib.h>
#include "RexxCore.h"
#include "RexxMemory.hpp"
#include "ActivityManager.hpp"
#include "SystemInterpreter.hpp"
#include "Memory.hpp"


/**
 * Allocate a block of memory suitable to pass back to
 * another program as a return result
 *
 * @param size   The memory size to allocate.
 *
 * @return The pointer to the allocated memory.
 */
void * SystemInterpreter::allocateResultMemory(size_t size)
{
    return malloc(size);
}


/**
 * Release a block of memory given to us by an outside
 * agent as a return result
 *
 * @param memoryBlock
 *               The block of memory to release.
 */
void SystemInterpreter::releaseResultMemory(void *memoryBlock)
{
    free(memoryBlock);
}


/**
 * Allocate a segment of memory using the system-defined mechanism
 *
 * @param size   The size of the segment
 *
 * @return The pointer to the segment or NULL is there is an allocation error.
 */
void *SystemInterpreter::allocateSegmentMemory(size_t size)
{
    return calloc(size, 1);
}


/**
 * Return a heap segment back to the system.
 *
 * @param segmentBlock
 *               The pointer to the block to release.
 */
void SystemInterpreter::releaseSegmentMemory(void *segmentBlock)
{
    free(segmentBlock);
}
